Thread and lint collector for textile drafting machines



Sept. 14, 1954 KALWMTES 2,688,778

IXYl-IN TOR.

FRANK I'KALWAITES.

m MW, 67* M16 ATTY.

Patented Sept. 14, 1954 THREAD AND LINT COLLECTOR FOR TEXTILE DRAFTING MACHINES Frank Kalwaites, Grafton, Mass., assignor to Whitin Machine Works, Whitinsville, Mass, a corporation of Massachusetts Application April 22, 1953, Serial N 0. 350,315

1 Claim. 1

This invention relates to machines for drafting textile fibers and relates particularly to roving and spinning frames. In such machines, broken ends of roving or thread occasionally occur, and fly or lint tends to accumulate.

Clearer rolls have been provided to catch and wind up the broken threads or rovings, and pneumatic devices have been provided to remove broken threads. Neither one of these devices has been found entirely satisfactory.

The clearer rolls required frequent hand cleaning, and the pneumatic devices, while fairly effective on broken ends, did not keep the drafting rolls and frame clear of fly and lint.

It is the general object of my present invention to provide a combination of a clearer roll and a coacting pneumatic device for more effective removal of both broken ends and fly or lint.

My invention further relates to arrangements and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claim.

A preferred form of the invention is shown in the drawings, in which Fig. 1 is a sectional end elevation of a set of drafting rolls having my invention applied thereto; and

Fig. 2 is a perspective view of certain parts shown in Fig. 1.

Referring to the drawings, I have shown parts of a spinning frame comprising stands 10 supporting front, middle and back lower rolls l2, l4 and IE and corresponding upper rolls 22, 24 and 26. Aprons 2'! and 28 of the usual high-draft type are also indicated, and the upper rolls are mounted in the usual hinged frames 30.

My invention more specifically comprises a clearer roll R engaging the under side of the front bottom roll I2 and yieldingly pressed upward against the roll 12 by U-shaped springs 32. The free ends of the springs 32 coact with the end gudgeons 34 of the roll R, and the fixed ends of the springs are secured to plates 35 which may be attached to the stands by screws 36.

An elongated suction box B is associated with each clearer roll R and is preferably formed with a closed back plate 40 and with an imperforate top plate 4| and bottom plate 42. The front edges of the plates 4| and 42 are closely adjacent the rotating surface of the roll R but are slightly spaced therefrom.

A tube 50 is connected into the middle of the back plate 40, and a flexible tubular member 52 connects the tube 50 with a main suction pipe 55. Suitable packing 56 provides a tight joint between the tube 50 and the member 52.

The ends of the box B are closed by plates or end members 60 (Fig. 2) which also provide bear- 2 ings for the gudgeons 34 of the roll R. Each roll R and box B are of sufficient length to service a plurality of drawing roll sections, four such sections being indicated in Fig. 2.

The roll R ma be covered with any suitable material 64 such as felt or leather.

My improved thread and lint collector, constructed as above described, is readily applied to any usual commercial drawing frame and has been found extremely satisfactory in use. Broken ends of thread or roving are engaged by the roll R and are carried along thereby. As the end of the thread passes the suction box B, the thread is drawn into the tube 50 and through the tubular member 52 into the main suction pipe 55 which delivers all waste to a selected collection point.

The clearer roll R also maintains continuous engagement with the bottom roll [2 and keeps all of the drafting sections thereof continuously clear of fiy or lint, thus assuring production of high-grade thread or roving.

As the thread and fly or lint is continuously removed from the roll R, removal and hand-cleaning of the roll is rendered unnecessary and correspondingly less attention by the operator is needed.

Having thus described my invention and the advantages thereof. 1 do not wish to be limited to the details herein disclosed, otherwise than as set forth in the claim, but what I claim is:

A thread and lint collector for a textile machine having a rotated drawing roll, which comprises an elongated clearer roll, means to press said clearer roll yieldingly against said drawing roll, an elongated suction box having closed top and bottom plates, a substantially closed back plate with a low-pressure exhaust port only, the front of said box being open and being directed toward said clearer roll, and the front edges of the top and bottom plates being positioned closely adjacent to said clearer roll and restricting inward air leakage to said suction box, and said suction box having end plates closing the ends of said suction box and having bearings for the clearer roll which are mounted in said end plates.

References Cited in the file of this patent UNITED STATES PATENTS 

